Figure 4From: The instantaneous helical axis of the subtalar and talocrural joints: a non-invasive in vivo dynamic study Unit joint angular velocities. which define the IHA direction. Pure supination occurs when all components fall within the grey areas. One SD bars are provided every 5°, except for the subtalar joint, where each subject is represented by a unique line color (due to the rapidly changing direction of the subtalar IHA, creating a subject average did not represent the data well).Back to article page